病例报告:RORB3外子中的3'拼接部位变异与儿童的异常性泛性有关
Dandan Shi1, Nannan Li2, Caifang Fan1
1Department of Pediatrics, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.
Frontiers in genetics
|February 3, 2025
概括
在一个儿科患者中,确定了与视网膜酸受体相关的孤儿受体β (RORB) 基因的可能致病变体. 这一发现扩大了与一般性和缺席发作相关的已知RORB突变.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 分子生物学分子生物学
背景情况:
- 与视网膜酸受体相关的孤儿受体β (RORB) 基因对神经发育至关重要,并与阿尔茨海默病和双相情感障碍等疾病有关.
- 新出现的证据表明,RORB参与了一般性和缺席发作,尽管病原性变异仍未得到报道.
- 由于其复杂的功能,了解RORB在中的作用至关重要.
研究的目的:
- 为了研究年轻患者的遗传基础.
- 识别和描述与相关的RORB基因中的致病变体.
- 为了解RORB在病原发生中的作用做出贡献.
主要方法:
- 在患者及其父母身上进行了三组全外序列测序.
- 在RORB基因中鉴定出一种异合拼接位变异 (c.94-1G>A).
- 分析了该变体对mRNA拼接和蛋白质功能的影响,并使用ACMG指南评估了致病潜力.
主要成果:
- 在一个5岁的患者中,在RORB前体3的3'端发现了一种新型的异质合体拼接位变体 (c.94-1G>A).
- 这种变异破坏了正常的mRNA拼接,导致RORB蛋白的过早终止.
- 根据ACMG指南,该变体被归类为"可能致病",扩大了中已知的RORB突变谱.
结论:
- 鉴定到的RORB拼接部位变异可能是致病的,并有助于病原体.
- 这份病例报告增加了越来越多的证据,将RORB基因变异与一般性和缺席发作联系起来.
- 对RORB的功能进行进一步的研究是有必要的,以充分阐明它在神经系统疾病中的作用.
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